diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index 41c0c80..5372bf0 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -1752,11 +1752,8 @@
 static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old)
 {
 	struct n_tty_data *ldata = tty->disc_data;
-	int canon_change = 1;
 
-	if (old)
-		canon_change = (old->c_lflag ^ tty->termios.c_lflag) & ICANON;
-	if (canon_change) {
+	if (!old || (old->c_lflag ^ tty->termios.c_lflag) & ICANON) {
 		bitmap_zero(ldata->read_flags, N_TTY_BUF_SIZE);
 		ldata->line_start = 0;
 		ldata->canon_head = ldata->read_tail;